水声信道中组合声源参数反演

Inversion of combination sources parameters in underwater channel

为了研究水声信道中组合声源辐射声场的分布特性,选择了一个具有一定空间分布的组合声源,把坐标系的原点从接收点转换到组合声源首部,以方便计算。设计了利用小生境遗传算法反演组合声源参数的技术路径,当组合声源匀速直线运动时,接收了声源与接收点之间水平正横距离不同的多个航次的声压数据,得到了利用一个航次及同时利用多个航次的近场声压反演出的声源参数;当组合声源的运动轨迹是曲线时,给出了不同信噪比情况下的参数反演结果。该成果对于分析水声信道中组合声源的声场分布具有一定的参考价值和指导意义。

In order to study the radiation sound field distribution characteristic of combination acoustic source in the underwater sound channel, a combination acoustic source with certain spatial distribution is selected. For convenience, the coordinate system＇s zero point is transformed from the point of reception to the combination acoustic source head. A technical pathway using niche genetic algorithm inversion combination acoustic source parameters is designed. When the combination acoustic source takes uniform linear motion, the acoustic pressure data with different horizontal distance between acoustic sources and point of reception are received. Thus, the acoustic source parameters are derived by inversion using the near field sound pressure of a voyage and simultaneously many voyages. When the combination acoustic source＇s path is a curve, the parameter inversion results in the different signal-to-noise ratio are also obtained. The results are very useful in analyzing the sound field distribution of combination source in the underwater sound channel.